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首页> 外文期刊>Journal of Applied Polymer Science >Gas diffusion and dielectric studies of polystyrene-fullerene compositions
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Gas diffusion and dielectric studies of polystyrene-fullerene compositions

机译：聚苯乙烯-富勒烯组合物的气体扩散和介电研究

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Polystyrene-fullerene compositions containing up to 0.45 mol % (3 wt % fullerene C-60 were investigated. It was established that the addition of fullerene to polystyrene (PS) leads to an increase of molecular packing density and so influences the transport of small molecules through the polymer films. Gas diffusion through films of PS-fullerene compositions is slower than through PS films, and gas separating properties of compositions are higher. Dielectric studies showed that the fullerene is distributed as clusters in the polymer matrix of solid composition prepared from a toluene solution of PS and fullerene. Heating without air to the temperature higher than PS glass transition leads to increasing relaxation time of a-transition in PS of compositions containing >0.15 mol % (1 wt %) fullerene. This effect is caused by rather strong interaction of PS chains via fullerene molecules entered into the PS-fullerene complex. (C) 2002 Wiley Periodicals, Inc. [References: 25]
机译：研究了含量高达0.45 mol％（3 wt％的富勒烯C-60）的聚苯乙烯-富勒烯组合物。已确定在聚苯乙烯（PS）中添加富勒烯会导致分子堆积密度的增加，从而影响小分子的转运PS-富勒烯组合物薄膜中的气体扩散比PS-富勒烯组合物薄膜中的气体扩散慢，且组合物的气体分离性能更高。介电研究表明，富勒烯以簇状分布在由P-富勒烯组成的固体组合物中。 PS和富勒烯的甲苯溶液。在没有空气的情况下加热到高于PS玻璃化转变温度的温度会导致包含> 0.15 mol％（1 wt％）富勒烯的组合物在PS中的a-转变弛豫时间增加。 PS链通过富勒烯分子的相互作用进入PS-富勒烯络合物（C）2002 Wiley Periodicals，Inc. [参考文献：25]

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